Chemistry concepts and calculations

2) Consider a galvanic cell based upon the following line notation: Pb |Pb2 (1M)

2) Consider a galvanic cell based upon the following line notation: Pb |Pb2 (1M)IIAg(1M)IAg Option 1. The standard cell potential, Eo, equals 0.67 v Option 2. The mass of the silv…

2) Consider the following four weak acids: CH COOH K HBrO 1.8 x 10 Ka 2.5 x 10-.

2) Consider the following four weak acids: CH COOH K HBrO 1.8 x 10 Ka 2.5 x 10-.9 HCIO2 C6HSOH K 1.1 x 102 K-1.3x1010 Which of the following weak acid/conjugate base pairs would b…

2) Construct two charts like the ones below for each reaction (one for 1-bromope

2) Construct two charts like the ones below for each reaction (one for 1-bromopentane and one for 2-bromopentane). Check the boxes according to which mechanism is favored based on…

2) Construct two charts like the ones below for each reaction (one for 1-bromope

2) Construct two charts like the ones below for each reaction (one for 1-bromopentane and one for 2-bromopentane). Check the boxes according to which mechanism is favored based on…

2) Determine the rate law for the following reaction using the data provided. 2)

2) Determine the rate law for the following reaction using the data provided.                                     2)_______       2 A(g) + B(g) 2 C(g)                     [A]i (M)…

2) Enter the balanced half reaction that takes place at the cathode for the elec

2) Enter the balanced half reaction that takes place at the cathode for the electrochemical cell shown. Be sure to include electrons. Pt(s) l F-(aq) l F2(g) ll Cl-(aq), AuCl4-(aq)…

2) Ethylenediamine tetraacetic acid (EDTA) is a hexaprotic acid that was used as

2) Ethylenediamine tetraacetic acid (EDTA) is a hexaprotic acid that was used as a food preservative to prevent metal leaching in canned food before monolayer coatings were develo…

2) Explain how the one would approach solving (or approximating the solution) fo

2) Explain how the one would approach solving (or approximating the solution) for: a. Hydrogen atom b. Hydride anion c. Helium atom d. Lithium atom Make sure that you discuss the …

2) For NO2^- , what is the oxidation # for N and O? 3) For BrO^- , what is the o

2) For NO2^- , what is the oxidation # for N and O? 3) For BrO^- , what is the oxidation # for Br and O? 4) For AsO4^3- , what is the oxidation # for As and O? 5) For C2O4^2- , wh…

2) For the reaction: (NH2)2CO > (NH4)2 CO3 > 2NH3 + CO2 +H20 The standard requir

2) For the reaction: (NH2)2CO > (NH4)2 CO3 > 2NH3 + CO2 +H20 The standard required 20 mL of 0.01N NaOH to titrate the HCl The 1 mL sample required 10 mL of 0.01N NaOH to tit…

2) For the reaction: 2CHs + a) if 5.00 702 4co, + 6H0 grams C,Hs is reacted with

2) For the reaction: 2CHs + a) if 5.00 702 4co, + 6H0 grams C,Hs is reacted with 21.0 grams Oa, which reactant is your limiting reagent? Show work , 0938 b) What is the maximum am…

2) For the reaction: 2CHs + a) if 5.00 702 4co, + 6H0 grams C,Hs is reacted with

2) For the reaction: 2CHs + a) if 5.00 702 4co, + 6H0 grams C,Hs is reacted with 21.0 grams Oa, which reactant is your limiting reagent? Show work , 0938 b) What is the maximum am…

2) For the spectra labeled 1-4: Each spectrum corresponds to one of the followin

2) For the spectra labeled 1-4: Each spectrum corresponds to one of the following related functional groups: aldehydeketone carboxylic acid ester amide ether Draw these functional…

2) Gas Laws: Steam is heated at a constant pressure (1 bar) from an initial temp

2) Gas Laws: Steam is heated at a constant pressure (1 bar) from an initial temperature of 150 to 250 Using the thermodynamic data provided below, calculate H for: | 250 V,(cm/8)1…

2) Given the following initial rate measurements for the reaction A + B ? C (25

2) Given the following initial rate measurements for the reaction A + B ? C (25 oC) Trial [A], M [B], M d[A]/dt, M/s 1 0.30 0.10 5.4E-4 2 0.10 0.20 6.0E-5 3 0.10 0.10 6.0E-5 a. Wr…

2) Given the following initial rate measurements for the reaction A + B ? C (25

2) Given the following initial rate measurements for the reaction A + B ? C (25 oC) Trial [A], M [B], M d[A]/dt, M/s 1 0.30 0.10 5.4E-4 2 0.10 0.20 6.0E-5 3 0.10 0.10 6.0E-5 a. Wr…

2) Given the time-temperature transformation diagram and the accompanying hand-

2) Given the time-temperature transformation diagram and the accompanying hand- drawn partial phase diagram on the same page, what would be the phases present for a 4340 steel? Ca…

2) How many electrons are in the following molecule’s largest conjugated p syste

2) How many electrons are in the following molecule’s largest conjugated p system? IV V 4) Which of the following is not included in the mechanism for the following reaction? 5) W…

2) Identify the Unknown (# 1) a) Addition of pH 0.5 H 2 S resulted in formation

2) Identify the Unknown (# 1) a) Addition of pH 0.5 H2S resulted in formation of a precipitate. b) Addition of 3M KOH caused this precipitate to dissolve (gave a solution) c) Addi…

2) If a sample has A280= 0.5 and A260= 0.04, what would be the protein concentra

2) If a sample has A280= 0.5 and A260= 0.04, what would be the protein concentration (mg/ml)? 3) Two tubes, tube 1 containing 0.1 ml of a unknown protein sample and tube 2 contain…

2) Imagine a mixture of magnesium and titanium(IV) chloride with a total mass of

2) Imagine a mixture of magnesium and titanium(IV) chloride with a total mass of 5.104 kg. After the reaction between the two metals is complete, the mixture is inspected to deter…

2) In an experiment to determine the molecular weight and the ionization constan

2) In an experiment to determine the molecular weight and the ionization constant for a weak acid HA, a student dissolved 1.3717 grams of the acid in water to make 50.00 millilite…

2) In each of the following problems experimental data are given along with the

2) In each of the following problems experimental data are given along with the 95% confidence limits for the data Use this information to carry out the requested calculations. Gi…

2) In each of the following problems experimental data are given along with the

2) In each of the following problems experimental data are given along with the 95% confidence limits for the data Use this information to carry out the requested calculations. Gi…

2) In lab 6, we measured the changes of gas volume vs. pressure. i) Using any of

2) In lab 6, we measured the changes of gas volume vs. pressure. i) Using any of two sets of P-V data from your measurement to demonstrate that it agrees with the Boyle's law. 321…

2) In this laboratory experiment you are to generate sufficient carbon dioxide t

2) In this laboratory experiment you are to generate sufficient carbon dioxide to inflate a plastic zipper type bag. You first must carry out some calculations to determine the qu…

2) Is the exposure and effect in each of the following scenarios chronic or acut

2) Is the exposure and effect in each of the following scenarios chronic or acute? Explain your reasoning. 2 points each) A) a child drinks water containing lead, which results in…

2) Is the exposure and effect in each of the following scenarios chronic or acut

2) Is the exposure and effect in each of the following scenarios chronic or acute? Explain your reasoning. 2 points each) A) a child drinks water containing lead, which results in…

2) It takes about 0.69 µL (microliters) of a copper solution containing 0.4403 g

2) It takes about 0.69 µL (microliters) of a copper solution containing 0.4403 g of copper ion per 100 mL to make a spot approximately 0.494 cm in diameter. Calculate the microgra…

2) Lab Safety. Copy the table outlined below into your lab notebook. Read over t

2) Lab Safety. Copy the table outlined below into your lab notebook. Read over the experimental procedure, then complete the table so that you have a thorough list of key lab safe…

2) NHOH. aHint connect two hydrogens to nitrogen and connect N and O) Total numb

2) NHOH. aHint connect two hydrogens to nitrogen and connect N and O) Total number of valence electrons Lewis structure Electron pair geometry around N Electron pair geometry arou…

2) Obtain a clean, dry 25-mL graduated cylinder. Weigh the graduated cylinder us

2) Obtain a clean, dry 25-mL graduated cylinder. Weigh the graduated cylinder using a balance Record this value in your lab notebook. 3) Remove the graduated cylinder from the bal…

2) Obtain a clean, dry 25-mL graduated cylinder. Weigh the graduated cylinder us

2) Obtain a clean, dry 25-mL graduated cylinder. Weigh the graduated cylinder using a balance Record this value in your lab notebook. 3) Remove the graduated cylinder from the bal…

2) One kilogram of steam is contained in a horizontal frictionless piston and th

2) One kilogram of steam is contained in a horizontal frictionless piston and the cylinder is heated at constant pressure of 1.013 bar from 125°C to such a temperature that the vo…

2) Place the following in order of increasing magnitude of lattice energy. MgO R

2) Place the following in order of increasing magnitude of lattice energy. MgO RbBr CaS a. CaS < MgO < RbBr b. RbBr < CaS < MgO c. MgO < CaS < RbBr d. RbBr < …

2) Place the following in order of increasing magnitude of lattice energy. MgO R

2) Place the following in order of increasing magnitude of lattice energy. MgO RbBr CaS a. CaS < MgO < RbBr b. RbBr < CaS < MgO c. MgO < CaS < RbBr d. RbBr < …

2) Pretend that you are in the lab, and the instructor has given your group a vi

2) Pretend that you are in the lab, and the instructor has given your group a vial containing crystals of benzoic acid mixed with crystals of sodium chloride. The task is to isola…

2) Rank the following titrations in order of increasing pH at the equivalence po

2) Rank the following titrations in order of increasing pH at the equivalence point of the titration (1 = lowest pH and 5 = highest pH). __ 200.0 mL of 0.100 M HC2H3O2 (Ka = 1.8 x…

2) Rank the following titrations in order of increasing pH at the equivalence po

2) Rank the following titrations in order of increasing pH at the equivalence point of the titration (1 = lowest pH and 5 = highest pH). __ 200.0 mL of 0.100 M HC2H3O2 (Ka = 1.8 x…

2) Show the formation of B and C from A using curly arrow notation. Classify any

2) Show the formation of B and C from A using curly arrow notation. Classify any and all pericyclic reactions. Redraw product B with correct stereochemistry (Dashed and wedged bon…

2) Suppose that 29.02 g of ice at -12.8°C is placed in 60.63 g of water at 91.7°

2) Suppose that 29.02 g of ice at -12.8°C is placed in 60.63 g of water at 91.7°C in a perfectly insulated vessel. Calculate the final temperature. (The molar heat capacity for ic…

2) Take a look at the following chart of nuclear binding energy per nucleon. Fe

2) Take a look at the following chart of nuclear binding energy per nucleon. Fe is the most stable nucleus. #0 8-12C IAN Most stable nucleus Let's determine how they got that numb…

2) The active agent in many hair bleaches is hydrogen peroxide. The amount of H2

2) The active agent in many hair bleaches is hydrogen peroxide. The amount of H2O2 in 13.2g of hair bleach was determined by titration with a standard potassium permanganate solut…

2) The anti-codon sequence for the codon AGC IS... TCG CGA Not Listed UCG GCU 3)

2) The anti-codon sequence for the codon AGC IS... TCG CGA Not Listed UCG GCU 3) Diptheria was a major cause of death before the vaccine was developed. This toxin modifies a prote…

2) The anti-codon sequence for the codon AGC IS... TCG CGA Not Listed UCG GCU 3)

2) The anti-codon sequence for the codon AGC IS... TCG CGA Not Listed UCG GCU 3) Diptheria was a major cause of death before the vaccine was developed. This toxin modifies a prote…

2) The aromatic region of the H-NMR spectrum of pyridine is provided below. Assi

2) The aromatic region of the H-NMR spectrum of pyridine is provided below. Assign each of the H-NMR signals to their corresponding H-atoms in pyridine. Draw a series of resonance…

2) The conversion efficiency of a lightbulb represents the fraction of the elect

2) The conversion efficiency of a lightbulb represents the fraction of the electrical power that the bulb converts into visible light. It is thus a measure of the effectiveness of…

2) The distribution coefficient between methylene chloride and water for solute

2) The distribution coefficient between methylene chloride and water for solute Y is 9. An amount of 84.0 g of Y is dissolved in 160 mL of water. a) What w eight of Y would be rem…

2) The ferrous ion-orthophenanthroline complex can be used to analyze for Fe(II)

2) The ferrous ion-orthophenanthroline complex can be used to analyze for Fe(II) by using the absorption of this complex at 508 nm. A group of samples is known to contain between …

2) The figure shows the construction of a lithium ion battery as well as the mov

2) The figure shows the construction of a lithium ion battery as well as the movement of electrons and ions under charging conditions. This problem involves discharging. Lithium i…